From 5c3ac22089596e6efb817ff45062aff1fcf2e371 Mon Sep 17 00:00:00 2001
From: Miguel Barão <mjsb@uevora.pt>
Date: Mon, 4 Jul 2022 18:04:06 +0100
Subject: [PATCH] Small update

---
 README.md | 16 ++++++++++------
 battery.c |  9 +++++++++
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index f0fe63d..3adffdf 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,22 @@
-# Battery for tmux in FreeBSD
+# Battery indicator for tmux/FreeBSD
 
-This is is a little program to use in the tmux status bar to indicate the
-current battery state a life.
+This is is a little C program to indicate the current battery state and
+percentage in the tmux status bar.
 It uses the FreeBSD `sysctl` and is not compatible with Linux.
 
+Requires a font that includes utf-8 symbols. Iosevka and JetBrains Mono from
+NerdFonts have been tested.
+
 Compile with
 
 ```sh
 cc -Os battery.c -o battery
 ```
 
-In `~/.tmux.conf` setup the status bar like the following, with the correct path
-to the executable.
+and copy the executable to `~/.local/bin`.
+
+In `~/.tmux.conf` setup the status bar with something like
 
 ```tmux
-set-option -g status-right "#(/path/to/battery)"
+set-option -g status-right "#($HOME/.local/bin/battery)   %a, %d %b  %H:%M "
 ```
diff --git a/battery.c b/battery.c
index 9f93b01..1a44745 100644
--- a/battery.c
+++ b/battery.c
@@ -1,3 +1,7 @@
+#ifndef __FreeBSD__
+  #error Only works on FreeBSD
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/types.h>
@@ -27,6 +31,11 @@ int main() {
     exit(EXIT_FAILURE);
   }
 
+  if (life > 100)
+    life = 100;
+  else if (life < 0)
+    life = 0;
+
   switch (state) {
   case 0: /* fully charged */
     printf("\uf583 Full");
--
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